CN108997761A - A kind of precision-investment casting rosin basic mode material and preparation method thereof - Google Patents
A kind of precision-investment casting rosin basic mode material and preparation method thereof Download PDFInfo
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- CN108997761A CN108997761A CN201810939167.2A CN201810939167A CN108997761A CN 108997761 A CN108997761 A CN 108997761A CN 201810939167 A CN201810939167 A CN 201810939167A CN 108997761 A CN108997761 A CN 108997761A
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- China
- Prior art keywords
- parts
- rosin
- paraffin
- eva
- high pressure
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Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L93/00—Compositions of natural resins; Compositions of derivatives thereof
- C08L93/04—Rosin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C7/00—Patterns; Manufacture thereof so far as not provided for in other classes
- B22C7/02—Lost patterns
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/066—LDPE (radical process)
Abstract
The invention discloses a kind of precision-investment casting rosin basic mode material and preparation method thereof, the rosin basic mode material is mainly prepared by the raw material of following parts by weight: 7~9 parts of rosin, 43~51 parts of newtrexes, 27~30 parts of paraffin, 9~11 parts of microwaxes, 2~5 parts of high pressure polyethylenes, 1~4 part of ethylene-vinyl acetate copolymer (EVA).Preparation method are as follows: under heating conditions, various raw materials are mixed evenly into transparent liquid, cooling obtains after filtering.Rosin basic mode stream disclosed by the invention moves property and good moldability, and thermal expansion coefficient is small and stablizes, and has certain intensity and surface hardness, does not chemically react with paint adhesion agent, and being coated with property is good, good welding performance, has good comprehensive performance.
Description
Technical field
The present invention relates to precision-investment casting production easily fusible pattern pattern wax material used, cast more particularly to a kind of precision-investment
It makes with rosin basic mode material and preparation method thereof.
Background technique
Precision-investment casting is a kind of near net-shaped liquid metal moulding process.Its processing step is made of wax material
The apperance for the implements cast out welds running gate system in apperance and prepares wax-pattern, then repeats in dip-coating in wax pattern surface
Several layers of fireproof coating, and after successively sanding, drying and hardening, fusible pattern therein is melted with heating means such as steam and hot water and is gone
It is demoulded, all fusing is lost wax-pattern, only surplus shell, then pours into molten metal from sprue gate, removes fireproof coating type after cooling
Shell just obtains required metal casting.
Due to the accurate size of casting obtained by this way, corner angle are clear, surface is smooth, close to zero pendant most
End form state, thus be a kind of Near net shape casting process, therefore also known as hot investment casting.
Precision-investment casting is very widely used in the industrial production.It is applicable not only to the various alloys of various types
Casting, and the casting dimension produced is accurate, surface quality is higher than other casting methods or even other casting methods are difficult to
Complexity, the high temperature resistant, the casting for being not easy to processing cast, can be used model casting.
In precision-investment casting production, wax-pattern is the apperance for forming casting type chamber, to obtain dimensional accuracy and surface
Highly polished casting, first wax-pattern should inherently have high dimensional accuracy and surface smoothness.And wax-pattern manufacturing process
The middle factor for influencing wax-pattern dimensional accuracy is more complicated, and technological parameter is more, so wax-pattern dimensional accuracy variation range is bigger.
In addition, the performance of wax-pattern itself should also make the processes such as subsequent shell processed simple and easy as far as possible.To obtain the wax-pattern of high quality, remove
The die mould that should have had (mold of compacting wax-pattern) is outside, it is necessary to select suitable pattern-making material (abbreviation mould material) and reasonably make
Mold technique.
As melted module precise casting technology continues to develop, the technical standard of various precision castings is more and more tighter, so to mould material
Technical requirements and performance it is also higher and higher.Currently, model casting precision castings towards integration, be thinning and enlargement hair
Exhibition, the compacting of wax-pattern and the design of die mould encounter new challenge, it is desirable that mould material shrinking percentage is small, good stability of the dimension, mobility
Good, flexural strength height, hardness height, surface is smooth and there is wetability refractory material to be made to be easily adhered to model surface.
Summary of the invention
Goal of the invention: being one of the critical component in aircraft engine and gas turbine because of no surplus precision castings blade,
So mould material is the most important thing for improving precision castings surface quality and casting dimension stability.Based on the deficiencies of the prior art, originally
It is good that the purpose of invention is to provide a kind of surface smoothness, and dimensional accuracy is high, high specific surface area, the small fusible pattern essence of temperature dependency
Close casting rosin basic mode material and preparation method thereof.
Technical solution: to achieve the goals above, the invention discloses a kind of precision-investment casting rosin basic mode material,
Mainly it is made of the raw material of following parts by weight:
7~9 parts of rosin, 43~51 parts of newtrexes, 27~30 parts of paraffin, 9~11 parts of microwaxes, 2~5 parts of poly- second of high pressure
Alkene, 1~4 part of ethylene-vinyl acetate copolymer (EVA).
It is preferred that the rosin is primary rosin, newtrex is 140# newtrex, and paraffin is 60# paraffin, and microwax is
85# microwax.
Further preferably, component of the precision-investment casting with rosin basic mode material mainly by following weight ratio is made
At:
7 parts of primary rosins, 43 parts of 140# newtrexes, 27 parts of 60# paraffin, 9 parts of 85# microwaxes, 2 parts of high pressure polyethylenes, 1
Part EVA.
As another preferred embodiment, the precision-investment casting is with rosin basic mode material mainly by the component of following weight ratio
It is made:
9 parts of primary rosins, 51 parts of 140# newtrexes, 30 parts of 60# paraffin, 11 parts of 85# microwaxes, 5 parts of high pressure polyethylenes,
4 parts of EVA.
The present invention also provides the precision-investment casting preparation methods of rosin basic mode material, comprising the following steps:
(1) rosin, newtrex, paraffin, microwax, high pressure polyethylene and EVA are weighed in proportion；
(2) high pressure polyethylene-EVA- microwax-newtrex-rosin is sequentially loaded into change paraffin pan, power transmission is melted；
(3) as mould material melts, it is gradually added into paraffin, makes (the 7- of height the remaining paraffin pan height of mould material
8)/10；
(4) before mould material is completely melt, it is passed through compressed air, accelerates the dissolution of high pressure polyethylene and EVA, excludes polymerization pine
The bubble that perfume generates；
(5) have a power failure when liquid surface bubble excludes substantially and high pressure polyethylene, EVA all dissolve, then after being stirred,
When mould material temperature degree drops to 180 DEG C -200 DEG C, by mould material filter to get.
Before mould material described in step (4) is completely melt, i.e., when mould material melts 90% or so.
The time of stirring described in step (5) is 25-35 minutes, and filtering is filtered using 150#-200# sieve.
Technical effect: compared with the existing technology, rosin basic mode stream disclosed by the invention moves property and good moldability, thermal expansion
Coefficient is small and stablizes, and has certain intensity and surface hardness, does not chemically react with paint adhesion agent, being coated with property is good, weldability
Can be good, there is good comprehensive performance.
Specific embodiment
According to following embodiments, the present invention may be better understood.And as it will be easily appreciated by one skilled in the art that embodiment
Described specific test result is merely to illustrate the present invention, without that should will not limit sheet described in claims
Invention further explains the present invention below with reference to embodiment.
Embodiment 1:
(1) 7 parts of primary rosin, 51 parts of 140# newtrex, 27 parts of 60# paraffin, 10 parts of microwax, high pressure are weighed in proportion
3 parts and 2 parts of EVA of polyethylene；
(2) high pressure polyethylene-EVA- microwax-newtrex-rosin is sequentially loaded into stainless steel paraffin pan, power transmission is melted
Change；
(3) as mould material melts, it is gradually added into paraffin, makes (the 7- of height the remaining paraffin pan height of mould material
8)/10 or so；
(4) when mould material fusing 90% or so, insertion compressed air hose is passed through a small amount of compressed air, accelerates high pressure polyethylene
With the dissolution of EVA, the bubble that newtrex generates is excluded；
(5) it when liquid surface bubble excludes substantially and high pressure polyethylene, EVA all dissolve, then is stirred 30 minutes
After have a power failure, mould material is filled into clean stainless steel disc with 150#-200# sieve when mould material temperature degree drops to 180 DEG C -200 DEG C
Interior, wax ingot is stand-by.
Mould material performance: 94 DEG C of drop point, linear shrinkage 0.5%, bending strength 4.5MPa.
Embodiment 2:
(1) 9 parts of primary rosin, 43 parts of 140# newtrex, 30 parts of 60# paraffin, 9 parts of microwax, high pressure are weighed in proportion
2 parts and 3 parts of EVA of polyethylene；
(2) high pressure polyethylene-EVA- microwax-newtrex-rosin is sequentially loaded into stainless steel paraffin pan, power transmission is melted
Change；
(3) as mould material melts, it is gradually added into paraffin, makes (the 7- of height the remaining paraffin pan height of mould material
8)/10 or so；
(4) when mould material fusing 90% or so, insertion compressed air hose is passed through a small amount of compressed air, accelerates high pressure polyethylene
With the dissolution of EVA, the bubble that newtrex generates is excluded；
(5) it when liquid surface bubble excludes substantially and high pressure polyethylene, EVA all dissolve, then is stirred 30 minutes
After have a power failure, mould material is filled into clean stainless steel disc with 150#-200# sieve when mould material temperature degree drops to 180 DEG C -200 DEG C
Interior, wax ingot is stand-by.
Mould material performance: 89 DEG C of drop point, linear shrinkage 0.75%, bending strength 3.4MPa.
Embodiment 3:
(1) 8 parts of primary rosin, 48 parts of 140# newtrex, 28 parts of 60# paraffin, 11 parts of microwax, high pressure are weighed in proportion
4 parts and 1 part of EVA of polyethylene；
(2) high pressure polyethylene-EVA- microwax-newtrex-rosin is sequentially loaded into stainless steel paraffin pan, power transmission is melted
Change；
(3) as mould material melts, it is gradually added into paraffin, makes (the 7- of height the remaining paraffin pan height of mould material
8)/10 or so；
(4) when mould material fusing 90% or so, insertion compressed air hose is passed through a small amount of compressed air, accelerates high pressure polyethylene
With the dissolution of EVA, the bubble that newtrex generates is excluded；
(5) it when liquid surface bubble excludes substantially and high pressure polyethylene, EVA all dissolve, then is stirred 30 minutes
After have a power failure, mould material is filled into clean stainless steel disc with 150#-200# sieve when mould material temperature degree drops to 180 DEG C -200 DEG C
Interior, wax ingot is stand-by.
Mould material performance: 91 DEG C of drop point, linear shrinkage 0.62%, bending strength 3.7MPa.
Embodiment 4:
(1) 8 parts of primary rosin, 45 parts of 140# newtrex, 27 parts of 60# paraffin, 9 parts of microwax, high pressure are weighed in proportion
5 parts and 4 parts of EVA of polyethylene；
(2) high pressure polyethylene-EVA- microwax-newtrex-rosin is sequentially loaded into stainless steel paraffin pan, power transmission is melted
Change；
(3) as mould material melts, it is gradually added into paraffin, makes (the 7- of height the remaining paraffin pan height of mould material
8)/10 or so；
(4) when mould material fusing 90% or so, insertion compressed air hose is passed through a small amount of compressed air, accelerates high pressure polyethylene
With the dissolution of EVA, the bubble that newtrex generates is excluded；
(5) it when liquid surface bubble excludes substantially and high pressure polyethylene, EVA all dissolve, then is stirred 30 minutes
After have a power failure, mould material is filled into clean stainless steel disc with 150#-200# sieve when mould material temperature degree drops to 180 DEG C -200 DEG C
Interior, wax ingot is stand-by.
Mould material performance: 91 DEG C of drop point, linear shrinkage 0.77%, bending strength 4.1MPa.
Embodiment 5:
(1) 7 parts of primary rosin, 43 parts of 140# newtrex, 27 parts of 60# paraffin, 9 parts of microwax, high pressure are weighed in proportion
2 parts and 1 part of EVA of polyethylene；
(2) high pressure polyethylene-EVA- microwax-newtrex-rosin is sequentially loaded into stainless steel paraffin pan, power transmission is melted
Change；
(3) as mould material melts, it is gradually added into paraffin, makes (the 7- of height the remaining paraffin pan height of mould material
8)/10 or so；
(4) when mould material fusing 90% or so, insertion compressed air hose is passed through a small amount of compressed air, accelerates high pressure polyethylene
With the dissolution of EVA, the bubble that newtrex generates is excluded；
(5) it when liquid surface bubble excludes substantially and high pressure polyethylene, EVA all dissolve, then is stirred 25 minutes
After have a power failure, mould material is filled into clean stainless steel disc with 150#-200# sieve when mould material temperature degree drops to 180 DEG C -200 DEG C
Interior, wax ingot is stand-by.
Mould material performance: 88 DEG C of drop point, linear shrinkage 0.65%, bending strength 3.3MPa.
Embodiment 6:
(1) 9 parts of primary rosin, 51 parts of 140# newtrex, 30 parts of 60# paraffin, 11 parts of microwax, high pressure are weighed in proportion
5 parts and 4 parts of EVA of polyethylene；
(2) high pressure polyethylene-EVA- microwax-newtrex-rosin is sequentially loaded into stainless steel paraffin pan, power transmission is melted
Change；
(3) as mould material melts, it is gradually added into paraffin, makes (the 7- of height the remaining paraffin pan height of mould material
8)/10 or so；
(4) when mould material fusing 90% or so, insertion compressed air hose is passed through a small amount of compressed air, accelerates high pressure polyethylene
With the dissolution of EVA, the bubble that newtrex generates is excluded；
(5) it when liquid surface bubble excludes substantially and high pressure polyethylene, EVA all dissolve, then is stirred 35 minutes
After have a power failure, mould material is filled into clean stainless steel disc with 150#-200# sieve when mould material temperature degree drops to 180 DEG C -200 DEG C
Interior, wax ingot is stand-by.
Mould material performance: 92 DEG C of drop point, linear shrinkage 0.7%, bending strength 4.2MPa.
Claims (7)
1. a kind of precision-investment casting rosin basic mode material, which is characterized in that it is mainly prepared by the raw material of following parts by weight
It forms:
7~9 parts of rosin, 43~51 parts of newtrexes, 27~30 parts of paraffin, 9~11 parts of microwaxes, 2~5 parts of high pressure polyethylenes, 1
~4 parts of ethylene-vinyl acetate copolymers (EVA).
2. precision-investment casting according to claim 1 rosin basic mode material, which is characterized in that the rosin is level-one pine
Perfume (or spice), newtrex are 140# newtrex, and paraffin is 60# paraffin, and microwax is 85# microwax.
3. precision-investment casting according to claim 1 rosin basic mode material, which is characterized in that it is mainly by following heavy
The raw material of amount number is prepared: 7 parts of primary rosins, 43 parts of 140# newtrexes, 27 parts of 60# paraffin, 9 parts of 85# microwaxes, and 2
Part high pressure polyethylene, 1 part of EVA.
4. precision-investment casting according to claim 1 rosin basic mode material, which is characterized in that it is mainly by following heavy
The raw material of amount number is prepared: 9 parts of primary rosins, 51 parts of 140# newtrexes, 30 parts of 60# paraffin, 11 parts of 85# microwaxes, and 5
Part high pressure polyethylene, 4 parts of EVA.
5. the preparation method of any one of claim 1-4 precision-investment casting rosin basic mode material, which is characterized in that including
Following steps:
(1) rosin, newtrex, paraffin, microwax, high pressure polyethylene and EVA are weighed in proportion；
(2) high pressure polyethylene-EVA- microwax-newtrex-rosin is sequentially loaded into change paraffin pan, power transmission is melted；
(3) as mould material melts, be gradually added into paraffin, make (7-8) of height the remaining paraffin pan height of mould material/
10；
(4) before mould material is completely melt, it is passed through compressed air, accelerates the dissolution of high pressure polyethylene and EVA, newtrex is excluded and produces
Raw bubble；
(5) have a power failure when liquid surface bubble excludes substantially and high pressure polyethylene, EVA all dissolve, then after being stirred, to mould
When material temperature degree drops to 180 DEG C -200 DEG C, by mould material filter to get.
6. the precision-investment casting according to claim 5 preparation method of rosin basic mode material, which is characterized in that step
(4) before mould material described in is completely melt, i.e., when mould material melts 90% or so.
7. the precision-investment casting according to claim 5 preparation method of rosin basic mode material, which is characterized in that step
(5) time of stirring described in is 25-35 minutes, and filtering is filtered using 150#-200# sieve.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810939167.2A CN108997761A (en) | 2018-08-17 | 2018-08-17 | A kind of precision-investment casting rosin basic mode material and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810939167.2A CN108997761A (en) | 2018-08-17 | 2018-08-17 | A kind of precision-investment casting rosin basic mode material and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109735118A (en) * | 2019-01-05 | 2019-05-10 | 青岛马基泰商贸有限公司 | A kind of environment protection colour sealing wax and preparation method thereof, application |
| CN109759543A (en) * | 2019-01-04 | 2019-05-17 | 丁勇 | A kind of copper casted sculpture method for casting production |
| CN109880697A (en) * | 2019-03-13 | 2019-06-14 | 东莞理工学院 | A kind of special type candle wax material and special type candle |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1281873A (en) * | 2000-08-17 | 2001-01-31 | 上海交通大学 | Ultra-fine mould material for lost wax process of adornment |
| CN102876054A (en) * | 2012-09-03 | 2013-01-16 | 广西大学 | Packing mold material used in investment precision casting |
-
2018
- 2018-08-17 CN CN201810939167.2A patent/CN108997761A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1281873A (en) * | 2000-08-17 | 2001-01-31 | 上海交通大学 | Ultra-fine mould material for lost wax process of adornment |
| CN102876054A (en) * | 2012-09-03 | 2013-01-16 | 广西大学 | Packing mold material used in investment precision casting |
Non-Patent Citations (1)
| Title |
|---|
| 包彦堃等: "《熔模铸造技术》", 30 November 1997, 浙江大学出版社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109759543A (en) * | 2019-01-04 | 2019-05-17 | 丁勇 | A kind of copper casted sculpture method for casting production |
| CN109735118A (en) * | 2019-01-05 | 2019-05-10 | 青岛马基泰商贸有限公司 | A kind of environment protection colour sealing wax and preparation method thereof, application |
| CN109735118B (en) * | 2019-01-05 | 2023-10-24 | 青岛马基泰商贸有限公司 | Environment-friendly color sealing wax and preparation method and application thereof |
| CN109880697A (en) * | 2019-03-13 | 2019-06-14 | 东莞理工学院 | A kind of special type candle wax material and special type candle |
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Application publication date: 20181214 |